package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;
/**
 * 全局异常类，自定义处理所有异常
 */
@Slf4j
//@ResponseBody
//@ControllerAdvice(basePackages = "com.atguigu.gulimall.product.controller")   //指定处理异常的范围
@RestControllerAdvice(basePackages = "com.atguigu.gulimall.product.controller")   //指定处理异常的范围, 这个注解里面包含上面两个了
public class GulimallExceptionControllerAdvice {
    /**
     * 处理数据校验异常
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleVaildException(MethodArgumentNotValidException e){
        BindingResult bindingResult = e.getBindingResult();
        Map<String, String> errorMap = new HashMap<>();

        bindingResult.getFieldErrors().forEach((fieldError) -> {
            //             获取错误的属性        和       默认的提示信息
            errorMap.put(fieldError.getField(), fieldError.getDefaultMessage());
        });
        return R.error(BizCodeEnume.VAILD_EXCEPTION.getCode(), BizCodeEnume.VAILD_EXCEPTION.getMsg()).put("data", errorMap);
    }

    /**
     * 处理全局异常，上面的精准异常匹配不上，就走这里
     */
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){
        log.error("出现了错误: ", throwable);
        return R.error(BizCodeEnume.UNKNOW_EXCEPTION.getCode(), BizCodeEnume.UNKNOW_EXCEPTION.getMsg());
    }
}
